<template>
  <div class="wrapper">
    <header>
      <p>用户注册</p>
    </header>
    <!-- 返回按钮 -->
    <div class="back-button" @click="goBack">
      <i class="fa fa-arrow-left"></i>
      <!-- 使用 Font Awesome 图标 -->
    </div>
    <ul class="form-box">
      <li>
        <div class="title">用户名：</div>
        <div class="content">
          <input type="text" v-model="username" placeholder="用户名" class="username"/>
        </div>
      </li>
      <li>
        <div class="title">密码：</div>
        <div class="content">
          <input type="password" v-model="password" placeholder="密码" class="password"/>
        </div>
      </li>
      <li>
        <div class="title">确认密码：</div>
        <div class="content">
          <input type="password" v-model="confirmPassword" placeholder="确认密码" class="confirmPassword"/>
        </div>
      </li>
    </ul>

    <div class="button-register">
      <button @click="register">注册</button>
    </div>
  </div>
</template>

<script>
import { showToast } from "vant";
export default {
  data() {
    return {
      username: "",
      password: "",
      confirmPassword: ""
    };
  },
  methods: {
    // 返回上一页
    goBack() {
      this.$router.go(-1);
    },
    // 用户注册
    register() {
      if (this.password !== this.confirmPassword) {
        showToast({
          message: "两次密码输入不一致！",
          icon: "close"
        });
        return;
      }

      this.$http
        .post(
          "/users/register",
          {
            username: this.username,
            password: this.password
          },
          {
            headers: {
              "Content-Type": "application/json"
            }
          }
        )
        .then(res => {
          if (res.data.flag) {
            showToast({
              message: "注册成功，请登录",
              icon: "passed"
            });
            this.$router.push("/login");
          } else {
            showToast({
              message: "用户名已存在",
              icon: "close"
            });
          }
        })
        .catch(error => {
          console.error(error);
          showToast({
            message: "注册请求失败",
            icon: "close"
          });
        });
    }
  }
};
</script>

<style scoped>
/****************** 总容器 ******************/
.wrapper {
  width: 100%;
  height: 100%;
}

/****************** header部分 ******************/
.wrapper header {
  width: 100%;
  height: 12vw;
  background-color: #0097ff;
  color: #fff;
  font-size: 4.8vw;

  position: fixed;
  left: 0;
  top: 0;
  z-index: 1000;

  display: flex;
  justify-content: center;
  align-items: center;
}

/****************** 表单部分 ******************/
.wrapper .form-box {
  width: 100%;
  margin-top: 12vw;
}
.wrapper .form-box li {
  box-sizing: border-box;
  padding: 4vw 3vw 0 3vw;
  display: flex;
  align-items: center;
}
.wrapper .form-box li .title {
  flex: 0 0 18vw;
  font-size: 3vw;
  font-weight: 700;
  color: #666;
}
.wrapper .form-box li .content {
  flex: 1;
}
.wrapper .form-box li .content input {
  border: 1px solid #ddd;
  outline: none;
  width: 100%;
  height: 8vw;
  font-size: 3vw;
  border-radius: 5px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.wrapper .form-box li .content input:focus {
  border-color: #0097ff;
  box-shadow: 0 0 8px rgba(0, 151, 255, 0.5);
}
/****************** 注册按钮 ******************/
.wrapper .button-register {
  width: 100%;
  box-sizing: border-box;
  padding: 4vw 3vw 0 3vw;
}
.wrapper .button-register button {
  width: 100%;
  height: 10vw;
  font-size: 3.8vw;
  font-weight: 700;
  color: #fff;
  background-color: #38ca73;
  border-radius: 4px;

  border: none;
  outline: none;
}
/****************** 底部菜单部分 ******************/
.wrapper .footer {
  width: 100%;
  height: 14vw;
  border-top: solid 1px #ddd;
  background-color: #fff;

  position: fixed;
  left: 0;
  bottom: 0;

  display: flex;
  justify-content: space-around;
  align-items: center;
}
.wrapper .footer li {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;

  color: #999;
  user-select: none;
  cursor: pointer;
}
.wrapper .footer li p {
  font-size: 2.8vw;
}
.wrapper .footer li i {
  font-size: 5vw;
}
.back-button {
  position: fixed;
  top: 5vw; /* 根据需要调整高度 */
  left: 4vw; /* 给左边留出一定间距 */
  display: flex;
  align-items: center;
  cursor: pointer;
  color: #ffffff;
  font-size: 4vw;
  z-index: 1000;
}
</style>